EP0385423B1 - Procédé de préparation des isomères optiques du 1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl phényl)-1,6-naphtyridine-3-carboxylate d'éthyle et du 1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl phényl)-1,6-naphtyridine-2-(N-méthyl-N-phénylméthylamino)3-carboxylate d'éthyle - Google Patents
Procédé de préparation des isomères optiques du 1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl phényl)-1,6-naphtyridine-3-carboxylate d'éthyle et du 1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl phényl)-1,6-naphtyridine-2-(N-méthyl-N-phénylméthylamino)3-carboxylate d'éthyle Download PDFInfo
- Publication number
- EP0385423B1 EP0385423B1 EP90103870A EP90103870A EP0385423B1 EP 0385423 B1 EP0385423 B1 EP 0385423B1 EP 90103870 A EP90103870 A EP 90103870A EP 90103870 A EP90103870 A EP 90103870A EP 0385423 B1 EP0385423 B1 EP 0385423B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- methyl
- naphthyridine
- isopropoxy
- dihydro
- trifluoromethylphenyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- XVXQOAYCEUDQTQ-UHFFFAOYSA-N ethyl 2-methyl-5-propan-2-yloxy-4-[2-(trifluoromethyl)phenyl]-1,4-dihydro-1,6-naphthyridine-3-carboxylate Chemical class CCOC(=O)C1=C(C)NC2=CC=NC(OC(C)C)=C2C1C1=CC=CC=C1C(F)(F)F XVXQOAYCEUDQTQ-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 7
- 238000002360 preparation method Methods 0.000 title claims 3
- 230000003287 optical effect Effects 0.000 title abstract description 4
- 125000004494 ethyl ester group Chemical group 0.000 title description 4
- KVPKWOWFDGOPOB-UHFFFAOYSA-N benzyl 2-methyl-5-propan-2-yloxy-4-[2-(trifluoromethyl)phenyl]-1,4-dihydro-1,6-naphthyridine-3-carboxylate Chemical compound C1=2C(OC(C)C)=NC=CC=2NC(C)=C(C(=O)OCC=2C=CC=CC=2)C1C1=CC=CC=C1C(F)(F)F KVPKWOWFDGOPOB-UHFFFAOYSA-N 0.000 claims abstract description 22
- ILYKYUGTTTUOBU-UHFFFAOYSA-N 2-[benzyl(methyl)amino]ethyl 2-methyl-5-propan-2-yloxy-4-[2-(trifluoromethyl)phenyl]-1,4-dihydro-1,6-naphthyridine-3-carboxylate Chemical compound C1=2C(OC(C)C)=NC=CC=2NC(C)=C(C(=O)OCCN(C)CC=2C=CC=CC=2)C1C1=CC=CC=C1C(F)(F)F ILYKYUGTTTUOBU-UHFFFAOYSA-N 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 23
- -1 benzyl ester Chemical class 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000005809 transesterification reaction Methods 0.000 claims description 7
- WOUANPHGFPAJCA-UHFFFAOYSA-N 2-[benzyl(methyl)amino]ethanol Chemical compound OCCN(C)CC1=CC=CC=C1 WOUANPHGFPAJCA-UHFFFAOYSA-N 0.000 claims description 5
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 5
- 238000001640 fractional crystallisation Methods 0.000 claims description 5
- YONLFQNRGZXBBF-ZIAGYGMSSA-N (2r,3r)-2,3-dibenzoyloxybutanedioic acid Chemical compound O([C@@H](C(=O)O)[C@@H](OC(=O)C=1C=CC=CC=1)C(O)=O)C(=O)C1=CC=CC=C1 YONLFQNRGZXBBF-ZIAGYGMSSA-N 0.000 claims description 4
- YONLFQNRGZXBBF-KBPBESRZSA-N (2s,3s)-2,3-dibenzoyloxybutanedioic acid Chemical compound O([C@H](C(=O)O)[C@H](OC(=O)C=1C=CC=CC=1)C(O)=O)C(=O)C1=CC=CC=C1 YONLFQNRGZXBBF-KBPBESRZSA-N 0.000 claims description 3
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 150000001735 carboxylic acids Chemical class 0.000 claims description 2
- 238000009903 catalytic hydrogenation reaction Methods 0.000 claims description 2
- 230000032050 esterification Effects 0.000 claims description 2
- 238000005886 esterification reaction Methods 0.000 claims description 2
- 150000005054 naphthyridines Chemical class 0.000 abstract description 2
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 47
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 30
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 239000012074 organic phase Substances 0.000 description 13
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 11
- 229910052938 sodium sulfate Inorganic materials 0.000 description 11
- 235000011152 sodium sulphate Nutrition 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 9
- HOVXHSHAXPTANC-UHFFFAOYSA-N 2-methyl-5-propan-2-yloxy-4-[2-(trifluoromethyl)phenyl]-1,4-dihydro-1,6-naphthyridine-3-carboxylic acid Chemical compound C1=2C(OC(C)C)=NC=CC=2NC(C)=C(C(O)=O)C1C1=CC=CC=C1C(F)(F)F HOVXHSHAXPTANC-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000011541 reaction mixture Substances 0.000 description 7
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 6
- CTSLXHKWHWQRSH-UHFFFAOYSA-N oxalyl chloride Chemical compound ClC(=O)C(Cl)=O CTSLXHKWHWQRSH-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000001291 vacuum drying Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000003480 eluent Substances 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- HBAQYPYDRFILMT-UHFFFAOYSA-N 8-[3-(1-cyclopropylpyrazol-4-yl)-1H-pyrazolo[4,3-d]pyrimidin-5-yl]-3-methyl-3,8-diazabicyclo[3.2.1]octan-2-one Chemical class C1(CC1)N1N=CC(=C1)C1=NNC2=C1N=C(N=C2)N1C2C(N(CC1CC2)C)=O HBAQYPYDRFILMT-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 235000019445 benzyl alcohol Nutrition 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000001530 fumaric acid Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- 229940127291 Calcium channel antagonist Drugs 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012312 sodium hydride Substances 0.000 description 2
- 229910000104 sodium hydride Inorganic materials 0.000 description 2
- DXDIHODZARUBLA-DTPOWOMPSA-N (2r,3r)-2,3-dibenzoyloxybutanedioic acid;hydrate Chemical compound O.O([C@@H](C(=O)O)[C@@H](OC(=O)C=1C=CC=CC=1)C(O)=O)C(=O)C1=CC=CC=C1 DXDIHODZARUBLA-DTPOWOMPSA-N 0.000 description 1
- DXDIHODZARUBLA-IODNYQNNSA-N (2s,3s)-2,3-dibenzoyloxybutanedioic acid;hydrate Chemical compound O.O([C@H](C(=O)O)[C@H](OC(=O)C=1C=CC=CC=1)C(O)=O)C(=O)C1=CC=CC=C1 DXDIHODZARUBLA-IODNYQNNSA-N 0.000 description 1
- CGXLVFZJJOXEDF-UHFFFAOYSA-N 1,8-naphthyridine-3-carboxylic acid Chemical compound N1=CC=CC2=CC(C(=O)O)=CN=C21 CGXLVFZJJOXEDF-UHFFFAOYSA-N 0.000 description 1
- WXAVSTZWKNIWCN-UHFFFAOYSA-N 1-(1-phenylethoxy)ethylbenzene Chemical compound C=1C=CC=CC=1C(C)OC(C)C1=CC=CC=C1 WXAVSTZWKNIWCN-UHFFFAOYSA-N 0.000 description 1
- WAPNOHKVXSQRPX-UHFFFAOYSA-N 1-phenylethanol Chemical compound CC(O)C1=CC=CC=C1 WAPNOHKVXSQRPX-UHFFFAOYSA-N 0.000 description 1
- 125000004343 1-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])(*)C([H])([H])[H] 0.000 description 1
- OCQAXYHNMWVLRH-UHFFFAOYSA-N 2,3-dibenzoyl-2,3-dihydroxybutanedioic acid Chemical compound C=1C=CC=CC=1C(=O)C(O)(C(O)=O)C(O)(C(=O)O)C(=O)C1=CC=CC=C1 OCQAXYHNMWVLRH-UHFFFAOYSA-N 0.000 description 1
- MVODTGURFNTEKX-UHFFFAOYSA-N 2-bromo-n-(2-bromoethyl)-n-(thiophen-2-ylmethyl)ethanamine;hydrobromide Chemical compound Br.BrCCN(CCBr)CC1=CC=CS1 MVODTGURFNTEKX-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FZNCGRZWXLXZSZ-CIQUZCHMSA-N Voglibose Chemical compound OCC(CO)N[C@H]1C[C@](O)(CO)[C@@H](O)[C@H](O)[C@H]1O FZNCGRZWXLXZSZ-CIQUZCHMSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- XPNGNIFUDRPBFJ-UHFFFAOYSA-N alpha-methylbenzylalcohol Natural products CC1=CC=CC=C1CO XPNGNIFUDRPBFJ-UHFFFAOYSA-N 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- NTBIYBAYFBNTCD-UHFFFAOYSA-N dibenzoyl 2,3-dihydroxybutanedioate Chemical compound C=1C=CC=CC=1C(=O)OC(=O)C(O)C(O)C(=O)OC(=O)C1=CC=CC=C1 NTBIYBAYFBNTCD-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007327 hydrogenolysis reaction Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000006340 racemization Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
Definitions
- the naphthyridine derivatives ( ⁇ ) -1,4-dihydro-5-isopropoxy-2-methyl-4- (2-trifluoromethylphenyl) -1,6-naphthyridine-3-carboxylic acid ethyl ester (formula I) and ( ⁇ ) - 1,4-Dihydro-5-isopropoxy-2-methyl-4- (2-trifluoromethylphenyl) -1,6-naphthyridine-3-carboxylic acid [2- (N-methyl-N-phenylmethylamino) ethyl] ester (formula II ) are known from DE-A-34 31 303 and pharmacologically identified as highly effective calcium antagonists.
- Both active substances are chiral compounds and the weakly basic racemic compounds formed in the synthesis could not previously be separated into the enantiomeric forms directly via diastereomeric salts with optically active auxiliaries.
- a separation of the corresponding naphthyridine-3-carboxylic acid into the optical antipodes by fractional crystallization with optically active bases or acids has also not hitherto been possible.
- the object of the invention is therefore to develop an economical and technically feasible process for separating a synthetic intermediate or a derivative of these compounds into the enantiomers, and then optically to transfer active end connections.
- the benzyl ester of these naphthyridine-3-carboxylic acids with optically active O, O'-dibenzoyl-tartaric acid in various solvents, preferably alcohols forms well-crystallizing diastereomeric salts which can be separated by fractional crystallization.
- the chiral benzyl esters can then easily and with good yield either be converted directly into the desired esters by transesterification, or the benzyl ester can first be cleaved hydrogenolytically to give the carboxylic acid and this can be converted into the desired chiral end products via the acid chloride and its reaction with the corresponding alcohol . No racemization takes place in either case.
- (+) - O, O'-dibenzoyl-D-tartaric acid or (-) - O, O'-dibenzoyl-L-tartaric acid are much cheaper.
- the two auxiliary acids can be recovered after separation and used again.
- the left-turning enantiomers can also be prepared in a corresponding manner.
- the method according to the invention it is possible to produce the desired enantiomerically pure calcium antagonists in a larger amount and in an economical form.
- the process leads to significant cost savings through lower costs for the auxiliary reagents for the resolution of racemates, the auxiliary reagent O, O′-dibenzoyl-tartaric acid, in contrast to 1-phenylethanol, even being able to be used repeatedly.
- the process according to the invention saves at least 3, possibly even 5, synthesis stages, as shown in synthesis scheme I.
- the present invention therefore enables the enantiomeric compounds to be used economically.
- the salt is suspended in 19 ml of 1N sodium hydroxide solution and extracted with 5 ⁇ 7 ml of toluene.
- the combined organic phases are washed with 1 x 7 ml of 1N sodium hydroxide solution and 3 x 7 ml of water.
- the organic phase is dried over sodium sulfate and then evaporated to dryness on a rotary evaporator.
- the solid residue is recrystallized from 20 ml of n-hexane.
- the salt is suspended in 19 ml of 1N sodium hydroxide solution and extracted with 5 ⁇ 7 ml of toluene.
- the combined organic phases are washed with 1 x 7 ml of 1N sodium hydroxide solution and 3 x 7 ml of water.
- the organic phase is dried over sodium sulfate and then evaporated to dryness on a rotary evaporator.
- the solid residue is recrystallized from 20 ml of n-hexane.
- the organic phase is dried over sodium sulfate and evaporated to dryness.
- the residue is purified on silica gel using toluene / ethyl acetate (7: 3) as the eluent. After the eluent has been distilled off, an oily substance remains.
- the oil is dissolved together with 1.28 g of fumaric acid in 180 ml of ethyl acetate under reflux. After filtration, the mixture is concentrated to about 20 ml.
- the product which precipitates out is filtered off with suction, slurried in 14 ml of toluene and stirred with 3 ml of 1M ammonia solution.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Claims (2)
- Procédé d'obtention de (+)-1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl-phényl)-1,6-naphtyridine-3-carboxylate d'éthyle et (-)-1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl-phényl)-1,6-naphtyridine-3-carboxylate d'éthyle caractérisé en ce que:A) à partir de (±)-1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl-phényl)-1,6-naphtyridine-3-carbo xylate d'éthyle par transestérification, on prépare du (±)-1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-tri fluorométhyl-phényl)-1,6-naphtyridine-3-carboxylate de benzyle;B) à partir de ce produit, par formation de sels par réaction avec un acide (±)-dibenzoyltartrique opti quement actif et cristallisation fractionnée du sel diastéréomère de son solvant approprié et libération ultérieure de la base, on prépare les esters benzy liques énantiomères (+)-1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl-phényl)-1,6-naphtyridine-3-carboxylate de benzyle et (-)-1,4-dihydro-5-isopro poxy-2-méthyl-4-(2-trifluoromethyl-phènyl)-1,6-naph tyridine-3-carboxylate de benzyle et, à partir de ceux-ci soit:a) par hydrogénation catalytique, on obtient les acides carboniques énantiomères correspondants qui, après transformation en le chlorure d'acide, sont estérifiés par l'éthanol, oub) les composés optiquement actifs recherchés sont directement transestérifiés par l'éthanol.
- Procédé selon la revendication 1, pour l'obtention de (+)-1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl-phényl)-1,6-naphtyridine-2-(N-méthyl-N-phénylméthyl-amino)-3-carboxylate d'éthyle et (-)-1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl-phényl)-1,6-naphtyridine-2-(N-méthyl-N-phénylméthyl-amino)-3-carboxylate d'éthyle, caractérisé en ce que, pour l'estérification dans l'étape B), a), ou pour la transestérification dans l'étape B), b), on utilise le 2-(N-benzyl-N-méthylamino)éthanol.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3906460A DE3906460C1 (fr) | 1989-03-01 | 1989-03-01 | |
DE3906460 | 1989-03-01 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0385423A2 EP0385423A2 (fr) | 1990-09-05 |
EP0385423A3 EP0385423A3 (fr) | 1991-08-14 |
EP0385423B1 true EP0385423B1 (fr) | 1995-02-08 |
Family
ID=6375232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90103870A Expired - Lifetime EP0385423B1 (fr) | 1989-03-01 | 1990-02-28 | Procédé de préparation des isomères optiques du 1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl phényl)-1,6-naphtyridine-3-carboxylate d'éthyle et du 1,4-dihydro-5-isopropoxy-2-méthyl-4-(2-trifluorométhyl phényl)-1,6-naphtyridine-2-(N-méthyl-N-phénylméthylamino)3-carboxylate d'éthyle |
Country Status (8)
Country | Link |
---|---|
US (1) | US5037987A (fr) |
EP (1) | EP0385423B1 (fr) |
JP (1) | JPH02275879A (fr) |
AT (1) | ATE118205T1 (fr) |
DE (2) | DE3906460C1 (fr) |
DK (1) | DK0385423T3 (fr) |
ES (1) | ES2067577T3 (fr) |
GR (1) | GR3015659T3 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9405833D0 (en) * | 1994-03-24 | 1994-05-11 | Pfizer Ltd | Separation of the enantiomers of amlodipine |
EP3560922A1 (fr) * | 2018-04-24 | 2019-10-30 | Bayer Aktiengesellschaft | Procédé de preparation de (4s) - 4- (4-cyano-2-methoxyphenyl) -5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthyridine-3-carboxamide par résolution racémique par esters d'acide tartrique |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3832388A (en) * | 1972-09-07 | 1974-08-27 | R Lorenz | Resolution of 2-(p-hydroxy)phenylglycine |
FI800005A (fi) * | 1979-01-05 | 1980-07-06 | Ciba Geigy Ag | Foerfarande foer framstaellning av en ny vaenstervridande bicyklisk tiadiazafoerening och dess salter |
IL75987A (en) * | 1984-08-25 | 1991-07-18 | Goedecke Ag | Tri-and tetrasubstituted-1,4-dihydro-1,6-naphthyridine-3-carboxylic acid derivatives,their preparation and pharmaceutical compositions containing them |
US4760081A (en) * | 1984-08-25 | 1988-07-26 | Goedecke Aktiengesellschaft | 1,6-naphthyridine derivatives useful for treating diseases of the blood vessels |
DE3431303A1 (de) * | 1984-08-25 | 1986-02-27 | Goedecke Ag | 1,6-naphthyridin-derivate, verfahren zu deren herstellung und deren verwendung |
DE3602655A1 (de) * | 1985-01-29 | 1987-07-30 | Goedecke Ag | 1,6-naphthyridin-derivate, verfahren zu deren herstellung und deren verwendung |
-
1989
- 1989-03-01 DE DE3906460A patent/DE3906460C1/de not_active Expired - Fee Related
-
1990
- 1990-02-27 US US07/486,048 patent/US5037987A/en not_active Expired - Fee Related
- 1990-02-28 EP EP90103870A patent/EP0385423B1/fr not_active Expired - Lifetime
- 1990-02-28 JP JP2049153A patent/JPH02275879A/ja active Pending
- 1990-02-28 ES ES90103870T patent/ES2067577T3/es not_active Expired - Lifetime
- 1990-02-28 AT AT90103870T patent/ATE118205T1/de not_active IP Right Cessation
- 1990-02-28 DE DE59008426T patent/DE59008426D1/de not_active Expired - Fee Related
- 1990-02-28 DK DK90103870.3T patent/DK0385423T3/da active
-
1995
- 1995-04-03 GR GR950400803T patent/GR3015659T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
ATE118205T1 (de) | 1995-02-15 |
GR3015659T3 (en) | 1995-07-31 |
JPH02275879A (ja) | 1990-11-09 |
ES2067577T3 (es) | 1995-04-01 |
DE3906460C1 (fr) | 1990-11-15 |
DE59008426D1 (de) | 1995-03-23 |
DK0385423T3 (da) | 1995-06-12 |
US5037987A (en) | 1991-08-06 |
EP0385423A3 (fr) | 1991-08-14 |
EP0385423A2 (fr) | 1990-09-05 |
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